Popular questions

Do you have any transmission fluid leaks or clutch hydraulic control leaks? If the transmission gear oil has leaked out, that can cause hard shifting. If no leaks are apparent, there are only two possible causes of what you describe:...

Hi there. It sounds like there could be a rear wheel bearing causing the drone. Has anyone checked the rear wheel bearings? They may have gone overlooked due to the front wheel bearings; it does happen. I suggest having a...

In order of priority, if you have a cracked exhaust manifold (leaking carbon monoxide), that actually has to be fixed first or at least coincident with the repair(s) to the engine/transmission. The principal danger from exhaust leaks (carbon monoxide) is...

Hello. From what you describe it would appear that the carburetor may need to be tuned or adjusted. Every engine runs differently, so in most cases, when a new or different carburetor is installed on an engine it will need...

Hi there. Check the VSS (vehicle speed sensor) on the transmission for any loose wires. If the wires are tight, then remove the VSS and clean it off, then put it back in and retest. If the symptoms come back,...

Hi There, You can certainly run the motor without a muffler without damaging anything, however it will most likely not pass an emissions test depending on what state you are in. As you may know, most states require mufflers on...

YourMechanic has published an informative FAQ dealing with Trouble Code P0335. Broadly, when Code P0335 sets, it means that there is a fault somewhere in the circuit for the crankshaft position sensor. But, the exact location of the fault has...

The gap between the 6K and the 7K line is considered the red zone. This zone is marked as the over-revving speed for the engine as the valves cannot shut any faster and the timing chain creates too much slack...

If wheel bearing is in need of replacement on this vehicle then you will need to replace the entire hub assembly with it since it comes as an assembly incorporated with the speed sensor.

If your radiator is leaking then that will cause your car to overheat. The coolant system is pressurized so if it can not hold pressure then the coolant will begin to boil in the engine causing it to overheat. It...

It is possible that the recirculation of the oil back into the intake could be causing an issue, if the amount is excessive. However, without reading any troubleshooting codes, there would be no way to confirm why the Check Engine...

If you are trying to measure and position a frame, use a "tram", which is a specialized frame measuring tool. If, though, you are looking for specific frame dimensions, off of each vehicle, so that you can design a "composite"...

If you hit something and bent a strut, it is very possible that your wheel speed sensor wiring was stretched. If the wheel speed sensor wiring was stretched or damaged in any other way, It could be the cause of...

Hello. When the Check Engine Light comes on in your car, it will automatically turn off other systems like the traction control. Depending on why the light is on, it may also cause shifting problems. I would typically start with...

Hi, thanks for writing in. I suspect your "upstream" sensor is the primary problem, and should be replaced. The downstream sensor you did replace is really measuring whether the catalytic converter (the main cat, not the pre-cat) did the job...

The electric radiator cooling fans are powered through relays, a fuse, and a temperature switch. The fan motors themselves should be tested (the fan motors can be independently powered, on or off the car, to see if they work properly)...

Since you have codes that both banks are lean then the problem will most likely be from air entering the intake manifold after the mass air sensor. The idle air control valve should not have any air leaks from the...

You need to have the battery cables checked to see if they are bad by doing a voltage drop test. If one or both of the cables are bad, it will overheat the starter and not recharge the battery sufficiently....

Hello, thank you for writing in. The first thing you want to do is check the electrical connections to the fuel pressure regulator. If the regulator is connected securely, there are no electrical wires exposed or damaged, and it looks...

Hello, thank you for writing in. The vehicle may be experiencing a wide variety of issues. Considering the age of the vehicle, the list can get even more extensive. Unfortunately, this is going to be a process of elimination until...

Hello. If the air compressor is faulty this will cause the engine to work harder and that may result in lower mpg. The whining noise could be caused by a bad serpentine belt, pulley, or a bad serpentine belt tensioner....

If striking the starter motor case with a rubber mallet brings the starter to life, that typically means there is a bad spot on the starter motor armature. The vibration from striking the motor simply moves the armature just enough...

Hello. The symptoms you describe are typical of a faulty starter or starter solenoid. If the starter motor or solenoid wear out internally they may no longer be able to start the engine properly. A common trick is to tap...